Wurlim Frostking vs Gravechill Killer

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Wurlim Frostking	Knight Revenant	Void	Defence	Legendary	Defence 33% Place: All battles
Gravechill Killer	Undead Hordes	Magic	Attack	Rare	-

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Wurlim Frostking	60	6	19650	1035	1233	100	15	50	30	20
Gravechill Killer	60	6	13545 -6105	1233 +198	892 -341	96 -4	15	50	30	10 -10

Wurlim Frostking	Winds of Winter Formula: 4*DEF Attacks 1 enemy. Has a 30% chance of placing a [Freeze] debuff for 1 turn. This debuff cannot be resisted. Places a [Perfect Veil] buff on the ally with the lowest HP for 2 turns. Perfect Veil Veil Freeze	Frostbite Blast Formula: 4*DEF Attacks all enemies. Has a 70% chance of placing a 50% [Decrease ATK] debuff and a 50% [Decrease ACC] debuff for 2 turns. These debuffs cannot be resisted. Also places a 30% [Increase C. DMG] buff on all allies for 2 turns. Cooldown: 4 Decrease C. DMG Decrease ACC 50% Decrease ATK 50% Increase C. DMG	Icegrave Armor Places a 25% [Strengthen] buff and a 60% [Increase DEF] buff on all allies for 2 turns. Has a 60% chance of placing a [Freeze] debuff on all enemies for 1 turn. This debuff cannot be resisted. Cooldown: 5 Freeze Strengthen Increase DEF 60%
Gravechill Killer	Freezing Toxin Formula: 3.9*ATK Attacks 1 enemy. Has a 40% chance of placing a 5% [Poison] debuff for 1 turn. Poison 5%	Blood Chill Formula: 6.8*ATK Attacks 1 enemy. Has a 75% chance of placing a 30% [Decrease DEF] debuff for 2 turns. Has a 75% chance of placing a 60% [Decrease DEF] debuff instead if the target is under a [Poison] debuff. Cooldown: 4 Decrease DEF 60% Decrease DEF 30%	Icy Veins Formula: 2.65*ATK Attacks 1 enemy 2 times.Each hit places a 2.5% [Poison] debuff for 2 turns. Places a 5% [Poison] debuff instead if the target is under a [Poison Sensitivity] debuff. Cooldown: 5 Poison 2.5% Poison 5%